Bloc: [Question] Testing LoginState in Firebase Login Tutorial Example

Created on 4 May 2020 · 2Comments · Source: felangel/bloc

From the example Firebase Login Tutorial, when testing if the initial state is correct:

test('initial state is correct', () {
expect(LoginState.empty(), loginBloc.initialState);
});

The test failed with:

package:test_api expect
package:flutter_test/src/widget_tester.dart 234:3 expect
test/login_bloc_test.dart 37:5 main.

Expected: LoginState: isEmailValid: true,
isPasswordValid: true,
isSubmitting: false,
isSuccess: false,
isFailure: false,
}>
Actual: LoginState: isEmailValid: true,
isPasswordValid: true,
isSubmitting: false,
isSuccess: false,
isFailure: false,
}>

Similarly, when testing of 'LoginButtonPressed':

group('LoginButtonPressed', () {
blocTest(
'emits [LoginLoading, LoginInitial]',
build: () async {
when(userRepository.signInWithCredentials(
'valid.email', 'valid.password'))
.thenAnswer((_) => Future.value(firebaseUserMock.email));
return loginBloc;
},
act: (bloc) => bloc.add(
LoginWithCredentialsPressed(
email: '[email protected]',
password: 'password',
),
),
expect: [
LoginState.loading(),
LoginState.success(),
],
);
});

The test failed with:

package:test_api expect
package:bloc_test/src/bloc_test.dart 124:25 blocTest.

Expected: [
LoginState:LoginState {
isEmailValid: true,
isPasswordValid: true,
isSubmitting: true,
isSuccess: false,
isFailure: false,
},
LoginState:LoginState {
isEmailValid: true,
isPasswordValid: true,
isSubmitting: false,
isSuccess: true,
isFailure: false,
}
]
Actual: [
LoginState:LoginState {
isEmailValid: true,
isPasswordValid: true,
isSubmitting: true,
isSuccess: false,
isFailure: false,
},
LoginState:LoginState {
isEmailValid: true,
isPasswordValid: true,
isSubmitting: false,
isSuccess: true,
isFailure: false,
}
]
Which: was LoginState: isEmailValid: true,
isPasswordValid: true,
isSubmitting: true,
isSuccess: false,
isFailure: false,
}> instead of LoginState: isEmailValid: true,
isPasswordValid: true,
isSubmitting: true,
isSuccess: false,
isFailure: false,
}> at location [0]

Would this be the correct way to test it? Any help or documentation with regards to this seemingly trivial matter would be greatly appreciated ! Thanks in advance !

question

Source